Label /dev/fscklogs and allow system_server access to it.

Otherwise you get denials such as:
type=1400 audit(1383590310.430:623): avc:  denied  { getattr } for  pid=1629 comm="Thread-78" path="/dev/fscklogs/log" dev="tmpfs" ino=1642 scontext=u:r:system_server:s0 tcontext=u:object_r:device:s0 tclass=file
type=1400 audit(1383590310.430:624): avc:  denied  { open } for  pid=1629 comm="Thread-78" name="log" dev="tmpfs" ino=1642 scontext=u:r:system_server:s0 tcontext=u:object_r:device:s0 tclass=file
type=1400 audit(1383590310.430:625): avc:  denied  { write } for  pid=1629 comm="Thread-78" name="fscklogs" dev="tmpfs" ino=1628 scontext=u:r:system_server:s0 tcontext=u:object_r:device:s0 tclass=dir
type=1400 audit(1383590310.430:625): avc:  denied  { remove_name } for  pid=1629 comm="Thread-78" name="log" dev="tmpfs" ino=1642 scontext=u:r:system_server:s0 tcontext=u:object_r:device:s0 tclass=dir
type=1400 audit(1383590310.430:625): avc:  denied  { unlink } for  pid=1629 comm="Thread-78" name="log" dev="tmpfs" ino=1642 scontext=u:r:system_server:s0 tcontext=u:object_r:device:s0 tclass=file

Change-Id: Ia7ae06a6d4cc5d2a59b8b85a5fb93cc31074fd37
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
diff --git a/system_server.te b/system_server.te
index 1ffa34d..4d79c1a 100644
--- a/system_server.te
+++ b/system_server.te
@@ -212,3 +212,8 @@
 
 # Access to wake locks
 allow system_server sysfs_wake_lock:file rw_file_perms;
+
+# Read and delete files under /dev/fscklogs.
+r_dir_file(system_server, fscklogs)
+allow system_server fscklogs:dir { write remove_name };
+allow system_server fscklogs:file unlink;